How to merge error cloud station with good ones after auto merge option ?......i cannot merge inbetween good and bad scans

I've merged 30 station clouds in Trimble real works and gave auto merge.....some stations have merged properly but some didn't....it gave me referenced data(merged one), secondary data(not merged properly) and non merged data .....I wanted to merge it manually after this .....but the merged stations and non merged stations cannot be merged....help me out with it